Apparatus for extracting oils.



M. KIRSHNER.

APPARATUS FOR BXTRAUTING OILS.

APPLIUA'I'ION FILED FEB. 12, 1908.

Patented Jan. 4, 1910.

'! SHEETS-SHEET 1.

M. KIRSHNER.

APPARATUS FOR BXTRAGTING OILS.

APPLIUATIOR FILED FB.12, 100a.

Patented J an. 4, 1910.

7 SHEETS-SHEBT 2.

M. KIRSHNER. APPARATUS FOR BXTEAGTING OILS.

APPLICATION FILED PEB.12, 190B.

Patented Jan. 4, 1910.

'! SHBETB-BHEET 3.

vwevlfot M. KIRSHNER.

APPARATUS FOR EXTRAGTING, OILS.

APPLICATION FILED FEB. 12, 1908.

7 8HEETS-BHEET 4.

Patented Jan. 4, 1910.

mmunmm llllllflllum.

M. KIRSHNER.

APPARATUS FOR EXTRAGTING OILS.

APPLIGATION FILED FEB. 12, 190B.

Patented Jan. 4, 1910.

7 SHEETS-SHEET 5.

M. KIRSHNER.

APPARATUS FOR. EXTEAUTING OILS.

APPLICATION FILED FEB-12, 1908. 945,549.

Patented Jan. 4, 1910.

wilueooeo FF A -49,

M. KIRSHNER.

APPARATUS FOR EXTRAOTING OILS.

APPLIOATIOF TILED FEB. 12, 1908.

nu 1 9 1 4 m J M m a 7 T B E H 3 3 T E E n S 7 mania a can: on wmo umuauwws msmnerm 0 c UNITED STATES PATENT OFFICE.

MICHAEL KIBSHNER, OF LYNGHBURG, VIRGINIA, ASSIGNOR TO KIRSHNER ROTARY OIL PRESS CORPORATION. OF LYNCHBURG. VIRGINIA, A CORPORATION OF VIR- GINIA.

APPARATUS FOR EXTRACTING OILS.

Application filed. February 12, 1808.

To all whom 'it may concern:

Be it known that 1, MICHAEL Kinsnxnn, of Lynchburg. in the county of Campbell and State of Virginia, have invented certain new and useful Improvements in Apparatus for Extracting Oils, of which the following is a specification.

This invention relates to certain new and useful im 'irovements in apparatus for extracting oil from cotton-seed or other matter containing oil, and one of the objects of the invention is to produce a machine of this character, operative by hydraulic means, of somewhat similar structure to the apparatus set forth in my U. S. Patent No. T611380, granted June 7, 190-1.

further object is to provide a press which through the aid of rotating hydraulic cylinders will operate continuously, the material being autoi'natically fed. and automatically compressed hydraulically so as to pro duee a continuous stream of oil. and the material automatitailly ejected ready to again receive a further charge as the press operates continuously.

In the preferred embodiment of my invention. as illustrated in the turcompanying drawings, the machine is of rotary char-ad ter and receives the material into Various pockets in a revolving drum and through the aid of plungers which are automatically operated by hydraulic means, the material is compressed into a hardened cake, and the oil is squeezed therefrom, the oil being do livcrcd into a receptacle, and the 'akes dis charged and carried away by any desirable means, the whole press operating continuously.

.Vith this brief statement. my invention may be said to consist in the apparatus shown in its preferable, though not necessary. embodiment in the accompanying drawings and then hereinafter more particle larl y described and claimed.

In the aforesaid drawings: Figure l is an end elevation of a machine constructed in accordance with my invention. Fig. a Vertical central section of the same on line 22 of Fig. Fig. 3 is a side elevation with parts in section on line 3- of Fig. Fig. 4 an interior view of one of the side frames and its connected parts. Fig. 5 is a detail on a much enlarged scale of a pou tion of one of the side frames. Fig. (3 is a Specification of Letters Patent.

l l l l t l x l Patented Jan. 4, 1910.

Serial No. 415,603.

section through the central valve mechanism drawn on an enlarged scale. Fig. 7 is a cross section through the line of Fig. (3. Fig. 8 is an end elevation, partly broken away, of the structure shown in Figs. 3 and T. Fig. 9 is a diagrammatic view of a part of the periphery of the valve. Fig. 10 is a top plan View of one of the plungers and its shoe, the latter being partly broken away. Fig. 11 is a vertical section of the plunger, its shoe, and coacting parts. Fig. 12 a plan view of one of the plungers. Fig. 13 is an enlarged view of the plunger, its shoe and coacting parts taken at right angles to that shown in Fig. 11.

Referring now to the details of the drawings by numerals: l and :2 represent a pair of side frames which are supported on two bases 3 and i formed on or connected therewith and which may be of any desired construction. Between these side frames 1 and located a casing 6 preferably of cylirr drical form which is illustrated in elevation in Fig. 1 and in section in Figs. 2 and this casing being bolted to the side frames as shown at T and 8. The said casing does not extend entirely around the space included by said frames 1 and 2, but as illus trated in Fig. it has a gap or opening of,

possibly, about one-fourth of its circumference for a purpose to be hereinafter described. The aforesaid side frames 1 and 2 are provided will annular rims 10 and 11 forming bearings within which is rotatably supported a hollow drum 13 as clearly seen in Fig. 2. This drum is provided with annular extensions 1 t and 1-3 which extend on opposite sides thereof and lit within the aforesaid bearings 10 and 11 of the side frames; and the extension H is made somewhat larger than its companion extension 15 in order to have secured to it a large gear 17 by which the hollow drum 13 is rotated. In order to rotate the aforesaid hollow drum 13, I employ a main shaft suitably journaled in an extension 5 of base 3 and to which power may be applied by a suitable pulley 19. A worm "20 is keyed to this main shaft 18 and this worm drives a large worm wheel 21 fixed to an intermediate shaft which is supported by bearings 23 and 2+ bolted to the side frames 1 and Q as clearly setn in Fig. 1. Upon the opposite end of this intermediate shaft :22 is secured a gear 25 of 65 pipes 36 the plunger is forced out under l 65 to hold pat-hing ()6 in place.

smaller size relatively to the large gear 17 1 before referred to and this gear 2-3 meshes with and drives the large gear 17 hereinhefore mentioned. The result of power heing applied to the hclt pulley it) is that the main shaft to. through its worin 2t). drives the worm-wheel 21. which in turn through the shaft 22 drives gear 2 and this gear 25 meshing with the larger gear 17. rotates the hollow drutn IS in its hearings supported hy the side 'fillllQS l and 2.

The aforesaid hollow tll'llll] 13 is formed with a plurality of radial pockets or openings 27 as clearly seen in Fig. 3; these pocltets opening toward the periphery of the drain so that they may he filled by gravity as they pass under a hopper 29 as will he hereinafter descrihcd. *lach pocket is preferahly provided with a hyd 'anlic cylinder 25 as clearly seen in Figs. 3 and 11. and an operating plunger 30 works in each cylinder and a shoe I'll connected with said plunger works in each pocket. The inner end of each cylinder 23 is connected hy means of a pipe 36. entering through a stntiing box 37. with a valve casing 40 within which is located a stationary valve .41.

from the valve using 40 to the cylinders 27 as there are cylinders and plnngcrs and that the valve 41 is intended to connect the eylinders with a source of hydraulic. supply. as oil. in order that the plungers may he op erated hydraulically therein. The valve ll is shown on a larger scale in Figs. 6 to t) and as there shown it comprises the valve proper 41 connected to a spindle l3 and around the valve is rotatahly supported the aforesaid valvc 'asing it). which rotates hetwcen two heads 44 and if). the latter of which is adjustahly held in position hy nuts lt'. Valve 41 is tapering and. as it wears, it may he reinoved and either the flat surface of the head llor the valve casing may he reground as necessary to permit the valve to make a tight lit when it is again secured in position hy the nuts 46. Valve it has two inlets and an exhaust shown in dotted lines in Fig. (3 and in full lines in Fig. H: the inlets heing designated 4H and lit and the exhaust fit).

'lhese inlets are connected with a source of supply hy pipes :12 and 53 shown in Fig. (3. l the two inlets heing eounected with su1tahle pressure gages shown at 55 and fit in Figs. 1 and i2. and the exhaust is: connected to an exhaust pipe 54. The pipe 52 is connected with a source of low pressure and pipe 53 high as 4000 pounds. and the constructimi of the valve is such that when pipe :72 and its port 48 connect with any of the pipes :36 the plunger 30 is forced outward by low pressure while when the parts rotate so that pipe at and port t9 connect with any of the It is to he understood that ther are as many pipes 36 leading;

with high pressure which may he as high pressure: on the other hand when the rotation of the parts brings pipe 36 opposite port Ft) the hydaulie ineans tthe oil) exhausts. To this end the ports 48. ill and 5t are connected with peripheral ports 55. .it'i and 57 which are so located. (see Figs. ti and T) as to respectively connect the hydraulic means with the pipes Bitleading to the hydraulic cylinders 28 as the valve casing it) rotates around the valve.

lnasnnlch as th pressure through port 55 is low and the pressure in port 56 is very high. and the pressure in the port 57 is only such as is due to the passage of the oil to the exhaust. it is neces ary to halance the valve from the side opposite the high pressure peripheral port St I accomplish this hy providing two peripheral side ports 3-9 and (it) which are on either side of the exhaust 57 (see Figs. t] and 9 these two ports 59 and (to heing connected by means of two small ports U1 and (32 with high pressure port it) shown hy dotted lines in Fig. (3 so that the oil front said high pressure port 4!) is not only fed to the peripheral port 56 on one side of thc alve hot is also fed to the periphc all ports 5H and (ill on the. opposite side of the valve ti. therchy balancing the prcss'urc. ()f course. suitahle stuliing inaterial (til is provided entirely ttl'ttttlltl tlltst smaller ports 5!! and ($0. as clearly shown in l igs. t3 and t). and which will he more particularly hereinafter descrihed.

The oil. or other hydraulic incans. under colnlnirativcly low pressure from port l8 or under high prrssurc front port if! as the peripheral ports In: and fill in turn feed the oil through the pipes or tuhes ilt'i. acts upon the plungers contained in the cylinders formed in the hollow druni l2 and forces them outward and I shall. therefore. now descrihe the. action of the said plungers. I may tirst state that. as illustrated in Fig. 3. I use ten plungcrs whose cylinders are connected by ten pipes or tuhes lt'i with the aforesaid valve casing -1-tl. the construction heing sueh that the hollow drum 1-") and its cylinders and contained plungers together with the ten pipes or tuhes Ill; and the valve casing to rotate around the stationary valve ll hy means of the gearing hcrciuhcfore do scrihed: the strain of all of said parts. hovw ever. heing taken oti' the valve -'ll heeause ol' the fact the drum Elli as heforc dcscrihcd is provided with extensions it and 15 which tintl hearings in the annular rinis of the side frames 1 and 2. Two of the evlinders in the hollow druni together with the plungers. ctc.. are very clearly shown in section in Fig. 2 are again shown on a larger scale in Figs. 11 and 3. 3y referring to these figures it will he seen that the pipes or tuhcs Ill; lead into the cylinders 28 each of which is provided with a lining (H; and with a ring lach plun ltitl Ill) stated. at i000 pounds.

gcr is provided with a cylindrical body fitting within the lining G l and is also provided with a ring 67 to hohl in place the packing 6h. The plunger 30. above its cylindrical port is broadened out to extend to the fol? width of the pocket. 27 and each end of the plunger is provided with downward extensions tilt to which are journaled antitrictiou rollers (39. These rollers are for the purpose of contacting with cams 70 and 71 formed within annular pockets 72 in the face plates 1 and 2; the construction being such that when the pockets of the drum 13 pas. under the hopper 2) the material to be compressed is ted by gravity into the pockets at. a time when the plunger is at. the bottom of the pocket. As the hollow drum til rotates, the open end of the pocket 97 finally passes beyond and is closed by the inner wall of the casing 6. As the hollow drum continues to rotate that. pipe 36 which connects the part ieular pocket which has just been filled pas es over the peripheral port 55. thus allot-ding communication with the low pressure port 48 and permitting the oil to reach the cylinder 28 and thus its plunger $30 is forced outward therein, giving a. preliminary compression and taking up the loose expansion of the material. As the hol ow drum coi'itinues to rotate, the following pocket is fil ed with the material and, the drum and its cylinders continuing to rotate, the pocket which has just been described as connecting with the low pressure port reaches the point where the low pre ure is cut otf and where its tube or pipe 36 i brought into communiration with the long peripheral port. it; and thus the oil under high prcs ure from port 49 flows through the port fit; into the cylinder 28 and the plunger 30 is forced outward at the high pressure which I prefer to make, as As the hollow drum continues its rotation the remaining pockets are filled and the ptui-ltets are kept under low pressure or high pressure according to which peripheral port th pipes 36 eomnn'lnitatte with. until the one which has been the first referred to almost reaches the gap or open inc" in *asing t1 illustrated in Fig. Just before it reaches this point. its pipe 36 passes out of communication with the long periphtral port 56 and the pressure of the oil therefore cut ot't'. The oil, however, as soon as the pipe 2S, communicates with the port 57 passes through the exhau t port 50 and cut ot' the exhaust pine The continued rotation ot the drum brings the pocket exnosed through the gap or opening shown in Fig. and at this point the rollers 69 which have been referred to as located on the ends of the downward ex en ions (58 ot the plui'igers ill. contact with the upper or outer surt ace of the cams TO shown in full lines at Fig. l and n1 dotted lines 111 Fig. 3.

i l t l t t its the rollers ride upon these cams 70 the plunger is gently forced outward and the compres ed cake is projected out of its pocket 27 and eject d bv means of the spring sup 'iorted scraper T'lshown at Fig. 3. This scraper is pivoted at. T5 and its rear end is supported l :1 spring 76 shown in Fig. 3. Atter the cake is ejected the rollers 69 on the ends of the plunger ride underneath the cams T1 shown in Full lines in Fig. 4 and in dotted lines in Fig. :3 and thus the plunger is rct urncd to its lower position, as it pas es under the hopper to be refilled, the pipe 36 passing out of communication with the exhaust at the time the pocket is completely tilled.

The details of the plunger are clearly shown in Figs. 10 to 13 and may be described as follows: The upper surface of each plunger 30 is formed with a. series of grooves 77 which, run longitudinally of the shoe and are inclined downward from the center on each side. At the extreme ends of the shoe there are vertical grooves 78 running into these grooves 77. Each plunger has a shoe 31 secured to it. by means of the screws 80 shown in Figs. 12 and 13 and each shoe is provided with grooves 81 similar to the grooves 77 in the top of the shoe, except that these grooves run in opposite direction so that the space att'oided by the combined grooves 77 and S1 is increasingly larger from the center outward thus providing a.

gradual carrying capacity according to the needs of the device. Each shoe is also pro vided with a large number of vertical perl'orations or passages 8') which connect the grooves 81 with small grooves 83 formed in the top of the shoe as clearly shown in Fig. 10. Over the top of this shoe is secured a plate 84 which is not only perforated but also has a series of line grooves connecting the perforations which grooves are diagonaltv shown by dotted lines at Fig. 10. Over this plate 81. which is grooved as seen in Fig. 11 is secured a hair-cloth covering 86 whose ends are underturned shown in Fig. 11 and supported bv means of screws 87; (see Fig. 1]). This hair-cloth covering is also secured in position b v having its center inserted in a longitudinal groove in the shoe 31 and held there bv an adiusting bar 88 shown in Figs. 10 and 12-3. The construction just deserihetil is such that when the 'rlungers and their shoes are forced out ward in their pockets. the cotton-seed or other material nessed into a cake between the hair-cloth covering St? and the inner peripherv ot the casing ti and the oil which is squeezed From the material in the compression passes through the hair-cloth covering, going through the perforations in the plates SI and following the diagcnal grooves shown in dotted lines in Fig. 10 and entering the longitudinal grooves at 83 in the tit) upper surface of the shoe. Through these grooves: the oil whieh has been queezed from the material passes tlOWttWttl'ti from the perioations or passages 82 anti enters the spare formed by the grooves Ti amt H1 in the top antl bottom. respeetively. ot the plunger amt its shoe. The oil gratltially flows to the pposite sitles of the shoes tttltl from thenee passes (l\\'11\\'t1l'tl through the grooves TS into the annular spare terior ot the sitle frames 1 anti "2. The oil naturally follows this passage until it: reaehes the hettom :tlltl is tlrainetl theret'rom by the (train pipes .10 amt t. whieh are shown on opposite sides of Fig. 2 as eonneeting with the bottom. lnasinueh a the grooves TT and S1 ineline in opposite three-- tions. the oil may flow toward the annnlai passage T2 in the grooves TT when the plan gers are above the center of the nnu-hine. ttlltl in the grooves 81 when the plungers: are rotatetl so that they are below the renter oi the maehine.

I have ltereinlwfore referred to the tart that the pressure on one sitle of the valve 1.1 is halaneetl because pressure is protlueetl in the peripheral port 5?. and I also halanee the pressure on the main hearing of the hollow tll'tllll 1?. To this end I form grooves i in the interior of the annular rims 1t} anti 11 as shown in Figs. 2 amt 5 amt within the e grooves I place parking strips it?) antt t whit-h are held in plaee by means of a plate 93 whieh is serewell to the inner wall of the groove antl elanips the parking in position. The llltitl pressure is fetl to the groove by means of pipes .lti whieh enter on one sitte ol' the plates l. the plates heing pert'o 'atetl as shown at Ett to admit the fluid through the plate against the extensions l -t am] 15 of the hollow tlrum 13. This same atrangement t'or set-tiring the parking in position is useti on the valve it as shown in Figs. t3 to The atoresaitl pipes are eonneetetl with the high pressure pipe 54 hy means of the pipes 51R and H9 as eltatrly shown in l i g'. "l.

In eonneetion with the 'alve it shooltl he statttl that as illustrated in Fig. 5 the halanring peripheral ports ."ii are on either sitle ol the low pressure pet'iphe'al port 55 alnl the exhaust 5T ainl that. as illu trated in Fitz. T. the periphe 'al port fit'i oerupies almo t all of the periphery from the peripheral p rt 35 arotnnl to the exhau t port 57, Th high pressure ieripheral port Fitt anti th hizzh pressure halaneing' port .37 are ])ltl\'ltltli with a parking as illustrated in aitl Fig. i

liy ttitttlltggf to Fig. t. it will he seen that the sitie frame are eat'h provitleil with a ratlial slot ltltl whirh slots are for the par pose ot permitting ot the easy removal ot' the pioneers antl their shoes. the rollers of the shoes passing into the slots ltttl as the plungers and shoes are withdrawn.

In order to prevent the plungers 3t) from T2 tornn-tl in the inl heine t'oreetl out against the outer asing when the press is first startetl and when no eharge is eontainetl in the eompression ehamhers. l preter to employ merhanism as follows: To eaeh pinngerl eonneet a stem ltil. \\ltl('it projeets ttownwartl and has t'ormetl on or eonnertetl to it a eherli *alve, 10-1 of ltttlll-- 1lllttltill shape whirh. when the l plunger li is at the extreme limit of its stroke. elo es against. its seat 1013 so as to prevent the plunger hein; .ftil't'ttl farther outwartl. tlr insteatl at using a spintlle of the rharaeter shown in Fig. 2. the spintlle may eomprise a spring ltll as itnlieatetl in i Fig. 1;, this being arrangetl to etose the i valve 102 when the plunger is within one- I tl Jl Itlt of an int-h of the outer casing. the spring permitting the eams it) to art upon t the rollers antl move the plungers outwartl t the remaining fraetion of an inch to permit l the ealce to lie eieetetl. in the tit't'ttllcjll tlt-t'liiltl(l!l ot' the various l parls l have given sin-h a full tlesrription of i the operation ot my apparatus that it is helievetl further tlesrription oi? the operation 5 is tmneeessary.

that I elailn as my invention isz l. in a tleviee ot' the eharaeter tleserihetl. a rotatahle member having a eries of eonr pression rhamhers opening towartl the periphery anti a serie ot hytlraulie eyliinlers t-onnnuuieating with saitl eoniprtssion eham hers. mains for ieetling t'naterial to saitl ehamhers. means i'or rennet-ting hytlranlie pressure with saitl eylintlers as they rotate. :|lun ers operating in saitl eyliinlers atnl arranged as they are operatetl hy saitl hytlranlie lil lhinlll t to eompres the material in saitl ehaiuiieris. and means for rollerting the oil rompresseti from the material in saitl rhamhers.

1. in a tleviee ol' the ehararter tleserihetl.

a rotatalile inentlier having a series of rompreL-sion rlrsnihers openingtowartl the periphery am] a series ot hyatraulie eylitnlers rommnnieating with saitl t't)lll])l't"l-Slt)ll ehamhers. plungers in saitl rylintlers. shoes supportetl hy sanl planners amt operating; in saitl rompression rhatnhers. means for teeth l ing' material to said ehamliers. means for eonneetinn' hyttranlie pre sure with saitl eyll itnlers as they rotate. atnl means for eolleetingthe oil expre-setl from the material tetl t to saitl eompre sion ehamhers wherehy as the rotatahle meinher anti its eompression rhainliet's anti hytlranlie eylimlers rotate. the material reeeivetl. rompressetl hy hytll'tttlllt' means. tli ehargetl. :ltttl the oil eonveyetl therei'rom in a eontiuuous st'r am.

It. in a tlevir ol" the rharaeter tlesrrihetl. a rotatalile niemlier having: a series of rompres ion ehamhers opening towartl the pe riphery anti a series of hydraulic eylintlers arrangbg eelv rznlially. m ans for feeding material to saitl ehainhers. anti means for conlit] nectine' said cylinders with hydraulic pressure, said means comprising low pressure, high pressure and exhaust respectively as the member and its cylinders rotate.

4. In a device of the character described, a. rotatable member having a series of compression chambers opening toward the periphery and a series of hydraulic cylinders arranged radially, means for feeding material to said chambers, and a single valve connecting low pressur high pressure and exhaust respectively with said cylinders as they rotate.

.3. in a device of the character described, a rotatable member having a series of compression chambers opening toward the periphery and a series of hydraulic cylinders arranged radially, means for feeding material to said chambers, and valve mechanism located within said rotatable member and having ports connecting low pressure. high pressure and exhaust respectively with said cylinders as the rotatable member and its cylinders rotate around said valve mechanism.

G. In a device of the character described, a supporting member having a series of compression chambers and a series of hydraulic cylinders, means for feeding material to said chambers, and valve mechanism located within said rotatable member and having ports connecting low pressure, high pressure and exhaust respectively with said cylinders.

T. In a device of the character described, a rotatable member having a series of compression chambers, a series of hydraulic cylinders also arranged in said rotatable membe' and arranged radially, means for feeding material to said chambers, and a valve located within said rotatable member and having ports connecting low pressure, high pressure and exhaust respectively with said cylinders as said rotatable member and cylinders rotate.

In a device of the character described, a rotatable member having a series of compression chambers opening toward the periphery and a series of hydraulic cylinders, a hopper located above said rotatable mem her for feeding material to its compression chambers as they rotate by the hopper, and means for connecting low pressure, high pressure and exhaust respectively with said cylinders as the rotatable member and its cylinders rotate.

9. l n a device of the character described, a supporting member rotatable on a. horizontal axis and having a series of comm'ession chambers opening toward the periphery, a series of hydraulic cylinders located in said member, means for feeding material to said chambers as they rotate under said feeding means, and a valve for connecting low pressure, high pressure and exhaust ports respectively with said cylinders as they rotate with their supporting member under said feeding means.

10. ln a device of the character described, a rotatable member having a series of compression chambers and a series of hyd 'aulic eyliiders, said cylinders being arranged radially, a valve having low pressure, high pressure and exhaust ports, and a valve casing for said valve rotatable with said member and having communication with each of said cylinders and arranged to respeetively teed low and high pressure to said cylinders as the rotatable member, its cylinders and the alve casing rotate with respect to said valve.

11. In a device of the character described, a hollow or open rotatable member having a series of compression chambers and a series of hydraulic cylinders, and a valve located within said hollow rotatable member and having eon'nnunication with each of said cylinders, said *alve having low pres sure, high pressure and exhaust ports where by as the hollow rotatable member and its cylinders rotate around said valve, the latter supplies low and high pressure respectively to said cylinders.

12. In a device of the character described, a hollow or open rotatable member ha ring a series of compression chambers opening toward the periphery and a series of radially arranged cylinders. means for feeding material to said compression chambers and a valve located within said hollow member, connnnnicating with said cylinders and having low pressure. high pressure and exhaust ports whereby as the hollow rotatable memher and its cylinders rotate around said valve low and high pressure respectively are col'n'iectcd with said cylinders.

'13. In a device of the character described, a pair of side frames supporting a casing provided with an opening at one point of its periphery, a rotatable member supported by said side frames and having a. series of comn'es ion chambers opening toward the peripher means for feeding material through the tmening in the casing to said compression chambers. said rotatable member also having hydraulic cylinders and valve mechanism arranged to respectively connect the low. high pres ure and exhaust. with said cylinders as the rotatable member and its cylinders rotate.

it. In a device of the character described, a pair of side frames supporting a casing provided with an opening at one point of its periphery. a rotatable member supported by said side frames and having a series of compression chambers opening toward the periphery, means for feeding material through the opening in the casing to said comprisi sion chambers, said rotatable member also having hydraulic cylinders and a valve having communication with each of said cylinders and having low pressure. high pressure and exhaust ports whereby as the rotatable member and its cylinders move around said valve. low pressure and high pressure are respectively connected with said cylinders and they are then exhausted.

t In a device of the character described. a rotatable tnember having a Series of compression chambers opening toward the periphery and a series of hydraulic cylinders arranged radially. means for feeding material to said chan'ibers. and a valve connecting low pressure. high pressure and exhaust respectively with said cylinders as they rotate. said valve maintaining the high pressure in connection with each cylinder for a longer period than the low pressure.

vlti. In a device of the cha 'acter descri bed. a rotatable member having a series of compression chambers opening toward the pcriphery and a series o'l hydraulic cylinders 1 arranged radially. means for feeding material to said chambers. and valve mechanism located within said rotatable member and having ports connecting low pressure. high pressure and exhaust respectively with said cylinders as the rotatable member and its cylinders rotate around said valve mechanism. said valve mechanism maintaining the high pressure in connection with each cylitnler for a longer period than the low pressure.

17. In a device of the character described. a rotatable member having a series of eonn pression chambers opening toward the periphery and a series of hyd 'aulic cylinders arranged radially. means for feeding material to said chambers. and a single valve located within said rotatable member and hav 1 ing ports connecting low pressure. high pressure and exhaust respectively with said cylinders as said rotatable member and its cylinders rotate around said valve. and said valve maintaining the high pressure in connection with *ach cylinder for a longer period than the low pressure.

to. In a device ol the character described. a supporting member having a series of com pression chambers and a series of hydraulic cylinders. means for feeding material to said chambers. and valve mechanism located within said rotatable member and having port connecting low pressure. high pressure and exhaust res jtectively with said cylinders. said valve mechanism maintaining the high pressure in connection with each cylinder for a longer period than the low pressure.

It In a device of the character described.

a o i )ortin member havin a series of ('(Hth pression chambers and a series of hydraulic eylimlers. means tor teeding material to said chambers. and a single valve having ports connecting low pressure. high pressure and i exhaust with said cylinders. said valve maintaining the high pressure in connection with each cylinder for a longer period than the low pressure.

20. In a t'levice of the cha 'acter described. a rotatable member having a. series o'l compression chambers. a series of hydraulic cylinders also arranged in said rotatable member and arranged radially. means for feeding material to said chambers. and a valve located within said rotatable member and having ports connecting low pressure. high pressure and exhaust respectively with said cylinders as said rotatable member and cylinders rotate. said valve maintaining the high pressure in connection with each cylinder to a lmiger period than the low pressure.

21. In a device of the character described. a rotatable member having a series of compression chambers opening toward the periphery and a series of hydraulic cylinders. a hopper located above said rotatable member and feeding material to its ctnnpression chambers as they rotate by the hopper. and means l'or connecting low pressure. high pressure and exhaust respectively with said cylinders as the rotatable member and its cylinders rotate. said means maintaining the high pressure in connection with each cylinder for a longer period than the low pressure.

22. I11 a device of the. character described. a rotatable member having a series of compression chambers opening toward the pe riphery and a series of hyd 'aulic cylinders. a hopper located above said rotatable membe' and feeding material to its compression chambers as they rotate by the hopper. and a valve having ports connecting low pressure and high pressure supply and exhaust with said cylinders as the rotatable membe' and its cylinders rotate, said 'alve maintaining the high pressure in connection with each cylinder for a longer period than the low pressure.

23. In a device of the character described. a supporting member rotatable on a. lltll'lZUll' tal axis and having a series of compression chambers opening toward the periphery. a series o'l hydraulic cylinders located in said member. means for feeding material to said chambers as they rotate under said feeding in ans. and a valve for connecting low pres-- sure. high pressure and exhaust ports respectively with said cylinders as they rotate with their supporting member under said t'eeding means. said valve maintaining the high pressure in connection with each cylin der for a longer period than the low pressure.

El. In a device of the character described. a rotatable member having a series of con1- pression chambers and a series of hydraulic cylinders, said cylinders being a1"anged z dially, a valve having low pressure and high ill) ltli) Ill) ll 'i till pressure ports, and a valve casing for said I valve rotatable with said member and having comn'iunication with each of said cylinders and arranged to respectively feed low, high pressure and exhaust to said cylinders as the rotatable member, its cylinders and the valve easing rotate with respect to said valve, said valve maintaining the high pres sure in connection with each cylinder for a longer period than the low pressure.

95. in a device of the character described, a hollow or open rotatable member having a series of compression chambers and a series of hydraulic cylinders, and a valve loeated within said hollow rotatable member and having connnunitaition with each of said cylinders, said valve having low pressure, high pressure and exhaust ports whereby as the hollow rotatable member and its cylinders rotate around said valve, the latter supplies low and high pressure respectively to said cylinders, said. valve maintaining the high pressure in connection with each cylinder for a longer period than thelow pressure.

26. in a device of the character described, a hollow or open rotatable member having a series of con'i 'iression chambers opening toward the periphery and a series of radially arranged cylinders, means for feeding material to said. compression chambers and a valve located within said hollow member, commlllih'atiiig with said cvlinders and having low pressure, high pressure and exhaust ports whereby as the hollow rotatable member and its cylinders rotate around said valve low and high pressure respectively are connected with said cylinders, said valve maintaining the high pressure in connection with each cylinder for a longer period than the low pressure.

T. In a device of the character described, a pair of side frames supporting at using provided with an opening at. one point of its periphery. a rotatable member supported by said side frames and having a series of compression chambers opening toward the periphery. means for feeding material through the opening in the casing to said 5 compression chambers. said rotatable member also having hydraulic cylinders and valve mechanism arranged to respectively connect the low and high pressure and exhaust with said cylinders as the rotatable member and its cylinders rotate, said valve mechanism maintaining the high pressure in connection with each cylinder to a longer period than the low pressure. 2%. in a device of the character described, a pair of side tranu-s supporting a casing l provided with an opening at: one point of l its periphery, a rotatable member supported by said side frames and having a series of l compression chambers opening toward thei periphery, means for feeding material l through the opening in the casing to said J compression chambers, said rotatable member also having hydraulic cyllnders and a valve having communication with each of said cylinders and arranged to connect low pressure, high pressure and exhaust thereto as said cylinders and the rotatable member rotate, said valve maintaining the high pressure in connection with each cylinder for a longer period than the low pressure.

El in a device of the character described, a rotatable member having a series of compression chambers opening toward the periphery and a series of hydraulic cylinders arranged radially, means for feeding material to said chambers, and a valve having comnmnication with said cylinders and having low, high pressure and exhaust ports connecting with said cylinders as they rotate, said low pressure port bein shorter than the high pressure port whereby the high pressure is maintained for a. longer period of time than the low pressure.

30. in a dc vice of the character described, a rotatable member having a series of comprcssion chambers, a series of hydraulic cylinders also arranged in said rotatable men1- hi,- and arranged radially, means for feeding material to said chambers, and a valve having comn'mnication with said cylinders and having low, high pressure and exhaust. ports connecting with said cylinders as they rotate, said low pressure port being shorter than the high pressure port whereby the high pressure is maintained for a longer period of time than the low pressure.

Ill. in a device of the character described a rotatable member having a series of conipression chambers, a series of hydraulic cylinders also arranged in said rotatable mem her and arranged radially,mcans for feeding material to said chambers, a alve having low pressure, high pressure and exhaust ports. and a valve casing rotating with said rotatal'ile member and its cylinders and having communication with each of said cylinders. whereby as the rotatable member, its

5 cylinders and valve casing rotate around said valve. low pressure and high pressure are res i ectivcly connected with said cylinders.

32. in a device of the character described, a rotatable member having a series of compression chambers opening toward the pe riphery and a series of hydraulic cylinders, a hopper located above said rotatable memher for feeding material to its compression chambers as they rotate by the hopper, a valve having low pressure, high pressure and exhaust ports, the former being shorter than the latter whereby the high pressure is maintained for a longer period of time than the low pressure, and a valve casing rotating with said rotatable member and its cylinders and having connnnnication with each of said cylinders whereby as the rotatable member, its cylinders and valve casing rotate around lltl gcrs in said cylinders acting to compress the material in said compression chambers, roll crs carried by said plungers, and cams acting upon said rollers for ejecting the material after compression.

41. In a device of the character described, a supporting member having a series of compression chambers and a series of hydraulic cylinders, said cylinders opening into said chambers, means for feeding material to said chambers, valve mechanism located within said supporting membc and connecting a source 01 supply with said cylinders, plungcrs in said cylinders acting to compress the material in said compression chambers, means for ejecting the material after compression. and means for returning the plungcrs to receive further material forcompressmn.

4:2. In a device of the character described, a supporting member havinga series of compression chan'ibers and a series of hydraulic cylinders. said cylinders opening into said chambers, means for feeding material to said chambers, valve mechanism located within said supporting member and connect ing a source of supply with said cylinders, plungcrs in said cylinders acting to compress the material in said compression chainbcrs, cams for ejecting the material after compression, and cams for returning the plunger-s to receive further material for comprcssion.

4?). In a device of the character described, a supportingmemberhaving a series of compression chambers and a series of l'iydranlic cylinders, said cylinders opening into said chambers, means for feeding material to said chambers, a alve having ports connecting low pressure, high pressure and exhaust with said cylinders, and plungers in said cylinders arranged to compress the material in said compression chambers.

44. In a device of the character described,

a supporting member having a series of com- I c i prcssion chambers and a series ot hydraulic cylinders, said cylinders opening into said chambers, means for feeding material to said chambers. a valve having ports connecting low pressure, high pressure and exhaust with said cylinders, plungers in said cylinders acting to compress the material in said compression chambers, and means for ejecting the material after COIIIPI'Pt-Slflll.

45. In a device of the character described, a supporting member having a series of compression chambers and a series of hydraulic cylinders, said cylinders opening into said chambers,means for feeding material to said chambers, a valve having ports mnnecting low pressure, high pressur and exhaust with said cylinders, plungers in said cylinders acting to compress the material in said compression chambers, and means comprising cams acting upon said plungers to eject the material attcr compression.

it). In a device of the character described. a rotatable member having a series of compression chambers and a series of hydraulic cylinders, said cylinders being at *anged radially and opening into said chambers, a valve located within said rotatable member, a valve casing tor said valve rotatable with said rotatable member, said valve casing having communication between said valve and each oi said cylinders. and plungers in said cylinders arranged to compress the material in said compression chambers.

47. In a device of the character described, a rotatable member having a series ot compression chambers and a series of hydraulic cylinders, said cylinders being arranged radially and opening into said chambers, a valve located within said rotatable member. a valve casing For said 'alve rotatable with said rotatable member, said valve casing having connnunication between said valve and each of said cylinders, plnngcrs in said cylinders acting to compress the material in said compression chambers, and means For ejecting the material after compression.

48. In a device of the character described. a rotatable member having a series of compression chambers and a series of hydraulic cylinders, said cylinders being arranged radially and opening into said cham )ers. a valve located within said rotatable member. a valve casing tor said valve rotatable with said rotatable member. said valve casing having conununication bctween said valve and each of said cylinders, plungcrs in said cylinders acting to compress the material in sa id compression chambers, and means cone prising cams acting upon said pluugers to eject the material utter compression.

4-9. In a device of the character described, a rotatable member having a series of compression chambers and a series of hydraulic cylinders, said cylinders being arranged ra dially and opening into said chambers. a valve located within said rotatable member. a valve casing for said valve rot atablc with said rotatable member. said valve casing having communication between said valve and each of said cylinders, plungers in said cylinders acting to compress the material in said compression chambers, means For ejecting the material after compression, and means for returning the plungcrs to receive further material for compression.

at). In a device of the character described, a rotatable member having a series o'l compression chambers and a series of hydraulic cylinders, said cylinders being arranged radially and opening into said chambers, a valve located within said rotatable member, a valve casing for said valve rotatablc with said rotatable member, said valve casing having communication between said valve and cach ol said cylinders, plungers in said cylinder acting to compress the ma terial in said compression chambers, cams l'or (jtcl'lllg the material after compression, and cams. [or returning the plungers to receive further material for compression.

5L In a device of the character described, a rotatable member having a series of coin pression chambers and a series of hydraulic cylinders, said cylinders being arranged. radially and opening into said chambers, a valve having low pressure, high pressure and exhaust ports, a valve casing for said valve rotatable with said member and hav ing commtn'iication with each of said eylinders and arranged to respectively feed low and high pressure to said cylinders as the rotatable member, its cylinders and the 'alvc casing rotate with respect to said valve, and

ing connnnnicalion \vith etch of said cylin plnngers in said cylinders arranged to com press the material in said compression chann hers.

3;. In a device of the character described, a rotatable mcmber having a. scrics ot' cont pression chambers and a series of hydraulic cylinders, said cylinders being arranged radially and opening into said chambers, a valve having low pressure, high prcssurc and exhaust ports, a valve casing for said valve rotatable with said member and hav ing communication with each of said cyliin tltlbl Zlllll tll'l'tillglll ltl It'h'ilflllllvcly L'Ulllltl'l low and high prcssurc and the exhaust to said cylindcrs as the rotatable mcntbcr, its cylinders and the valve casing rotate with respect to said valvc, plungers in said c \'linders acting to compress the material in said comprcssion chambers, and means for elect ing the material after compression.

in a device of the character described. a rotatable member having a. series of conc prcssion chambers and a scrics of hydraulic cylinders, said cylinders being arranged radially and opening into said chambers, a valve having lotv pressure, high pressure and cxhanst ports, a valve casing for said valve rotalablc with said lltlltllJt" and bar ing communication with each of said cylin ders and arranged to respectively connect low and high pressure and the exhaust to said cylimlcrs as the rotatable member, its cylinders and the valve casing relate with respect to said valvc. plnngers in said cyliic dcrs acting to compress the material in said compression chamlnrrs, and means comprising cams acting upon said plungers to eject the material after compression.

51. In a device of the character described, a rotatable member having a series of coinpression chambers and a series of hyt'lranlic cylinders, said cylinders being arranged radially and opening into said chambers, a. valve having low prcssnre, high pressure and exhaust ports, a valve asing for said valvc rotatable with said member and hav' ing connunnication with each oi said cylinders and arranged to respectively connect low and high pressure and the t'XllElllt-l to said cylinders as the rotatable mcmbcr. its cylindcrs and the valve casing rotatc \vith rcspcct to said valve. plnngcrs in aid cylin dcrs acting to compres the material in said compression chambers, rollers carricd by said 1)lttt1gci.--. and cams acting upon said rollcts lor ejecting thc matcrial al tcr contprcssicn.

3.3. In a. device ol the character described, a rotatable member having a series ol' cold prcssion chambers and a series ol' hydraulic t' \'lllttl= *ls, said cylinders being arrangcd radially and opening into said chambers. a valvc having loiv pressure, high prcs urc and exhaust ports a valvc crsing tor said valvc rotatable with said ntcmbcr and llt!\ dcl's and arranged to rcspcctivcly conncct. low and high prcssurc and the cxhausl to said cylinders as the rotatablc mctnbcr. its cylinders and lltc valvc casing rotate with rcspcct to said valvc, t'tlungcrs in said cylindcrs acting to compress the material in said compression chambers. mean l'or cjcrting the material after compression. and m ans tor returning the plungcrs to rcccivc l'nrthcr material For conun'cssion.

fat in a device ol' lhc cbaractcr de cribed a rotatable mcmbcl' having a series ol' contprcssion chambers and a series ol' hydraulic cylinders. said cylindcrs being arrangcd radially and opening into said chambers. a valve having low pressure, high pre ure and exhaust ports. a valve casing tor said valve rotatable with said member and having conununicztion with each ol' said cylinders and arranged to respectively con ncct lovv and high pressure and the exhaust to said cylinders as the rotntalllc mcnn her. its cylinders and the valve casing rotate with respect to said 'alvc, plungcrs in said cylinders acting to compress t'hc niatcrial in said compression chambers. cams l'or ejecting the material atlcr compression, and cams for returning the plnngcrs to receive t'urlhcr material tor compression.

ST. in a device ol the character described, a supporting member having a series ol conr prcssion chambers and a series of hydraulic cylinders opening into said chambers. means f r 'l ecding material to said chambers, valve mechanism located within said supporting member and connecting a source of supply with said cylinders. plungcr in said cylinders having shoes arranged to compre s the material in said compression chambers and means for conducting away the oil expressed by said plnngers from the nnitcrial in said chambers.

538. in a device of the character described, a rotatable member having a scrics ol' roml lt) pression chambers and a series of hydraulic cylinders. said cylinders being arranged radially opening into said chambers. a valve having low pressure. high pressure and exhaust ports. a valve -asing for said valve rotatable With said member and having communication with each of said cylinders and arranged to respectively connect low and high pressure and the exhaust: to said cylinders as the rotatable member. its cylinders and the valve casing rotate with respect to said valve. and plnngers in said cylinders having shoes arranged to con'ipress the material in said con'ipression chambers and means for conducting away the oil expressed by said shoes from the material in said chambers.

on. in a device of the character described. a rotatal'ile drum. a casing containing said drum and having an opening or gap therein. compression chambers in said drum arranged as the drum rotates in said casing to he exposed through said opening or gap. hydraulic cylinders contained in said drtun and opening into said chambers. means for tilting said compression chambers. and means for connecting hydraulic nes-sure with said cylinders as the drum and cylinders rotate. said means entering the cylinders after the compression chambers are tilled and exhausting as the compresssion chambers are exposed through said opening or gap.

tit). In a device of the character described. a rotatable drum. a casing containing said drum and having an opening or gap therein. compression chambers in said drum arranged as the drum rotates in said, casing to be exposed through said opening or gap. hydraulic cylinders contained in said drum and opening into said chai'nbers. means for lilting said compression chan'ihers, means for connecting hydraulic pressure with said cylinders as the drum and cylinders rotate. said means entering the cylinders after the com n-cssion chambers are filled and ex hausting as the compression chambers are exposed through said opening or gap. and means for ejecting the material as the con1- prcssion chambers are exposed through said opening or gap.

(51. In a device of the character described. a rotatable drum. a casing containing said drum and having an opening or gap there in. compression chambers in said drum arranged as the drum rotates in said casing to be exposed through said opening or gap, hydraulic cylinders contained in said drum and opening into said chambers. means for filling said compression chambers. and

means for connecting hydraulic pressure with said cylinders as the drum and cylinders rotate. said means connecting low pressure with said cylinders after the latter pass said opening or gap and later in the revol t l t l l l l l t lution of the drum connecting high pressure with said cylinders and exhausting as the compression chambers are exposed through said opening or gap.

(32. in a device of the character described. a rotatable drum. a casing containing said drum and having an opening or gap there in. compression chambers in said drum arranged as the drum rotates in said casing to be exposed through said opening or gap. hydraulic cylinders contained in said drum and opening into said chambers. means for filling said compression chambers. means for connecting hydraulic pressure with said cylinders as the drum amt cylinders rotate. said means connecting low pressure with said cylinders after the latter pass said opening or gap and later in the revolution of the drum connecting high pressure with said cylinders and exhausting as the com pression chambers are exposed through said opening or gap. and means for ejecting the material as the compression chambers are exposed through said opening or gap.

($3. in a device of the character described. a rotatable drum. a casing containing said drum and having an opening or gap therein, compression chambers in said drum arranged as the drum rotates in said casing to be exposed through said opening or gap. means for tilting said compression chambers. hydraulic cylinders contained in said drum and opening into said chambers. plungcrs operating in said cylinder and compressing the material in said compres sion chambers. and means for connecting hydraulic pressure with said cylinders as the drum and its cylinders and plungcrs rotate. said pressure entering the cylinders after the compression chambers are tilled and exhausting as the compression chambers are exposed through said opening or gap.

(54. lit a device of the character described. a rotatable drum. :1 iasing containing said drum and having an opening or gap therein. compression chambers in said drmn arranged as the drum rotates in said casing to be exposed through said opening or gap. means for tilting said compression chambers. hydraulic cylinders contained in said drum and o]')ening into said chambers. plungers operating in said. cylinders and compressing the material in said compression chambers. means for connecting hydraulic pressure with said cylinders as the drum amt its cylinders and plnngers rotate. said pressure entering the cylinders a t'ter the compression chambers are filled and exhausting as the compression chambers are exposed through said opening or gap. and means for ejecting the material as the compression chambers are exposed through said opening or gap.

65. In a device of the character described. a rotatable drum. a casing containing said drum and having an opening or gap therein.

compression chambers in said drum ranged as the drum rotates in said casing to be exposed through said opening or gap. means for titling said compression chambers. hydraulic cylinders contained in said drum and opening into said chambers. plungers operating in said cylinders and compressing the material in said compression chambers, in *ans for connecting hydraulic pressure with said cylinders as the drum and its cylinders and plungers rotate. said pressure entering the cylinders after the compression chambers are tilled and exhausting as the compression chambers are exposed through said opening or gap. and means for returning the plungcrs to receive further material for compression.

Fit). in a device ot the character described. a drum rotatable on a horizontal axis and having compression chambers therein, a casing containing said drum and having an opening or gap therein. a hopper for feeding material through said opening or gap to the compression chambers in said drum as the latter rotates under said hopper. hydraulic cylinders also carried by said drmn and means for connecting hydraulic pressure with said cylinders as the drum and cylinders rotate. said pressure entering the cylinders after the compression chambers are tilled and exhausting as the compression chambers are exposed through said opening or gap.

iii. In a device of the character described. a drum rotatable on a horizontal axis and having compression chambers therein. a C2151 ing containing said drum and having an opening or gap therein. a hopper for teeth ing material through said opening or gap to the compression chambers in said drum as the latter rotates under said hopper. hydraulic cylinders also carried by said drum and a valve for connecting hydraulic presure with said cylinders as the drum and cylinders rotate. said valve connecting low pressure with said cylinders after the latter pass said opening or gap and later in the revolution of the drum and cylinders connecting high pressure with said cylinders. and exhausting as the compressing chambers are exposed through said opening or gap.

t'tH. In a device of the character described. a drum rotatable on a horizontal axis and having compression chambers therein. a casing containing said drum and having an opening or gap therein. a hopper tor t'eedil'ig material through said opening or gap to the compression chambers in said drum as the latter rotates under said hopper. hydraulic cylinders also carried by said drum as the drum and cylinders rotate. and a valve having ports connecting low pressure with said cylinders after the latter pass said opening or gap and later in the revolution connect ing high pressure with said cylinders and t l l l t t t l l l arthen exhausting as the compression chambcrs are again exposed through said opening or gap. said low pressure port being shorter than said high pressure port whereby the high pressure is maintained for a longer period of time than the low pressure.

on. In a device of the character described. a hollow rotatable drum. side t'rames upon opposite sides of said drum and arranged to support the same. a casing also between said side frames and located around said drum. said casing having a gap or opening therein. compression chambers in said hollow drum arranged to be exposed as said drum brings the compression chambers opposite the opening or ap in said :asing. and a valve located within said hollow drum and having means for communicating with each oi said compression chaml'iers. said valve having ports connecting with low and high pressure and exhaust. and the low pressure port being of less capacity than the high pressure port whereby the high pressure is maintained for a longer period of time than the low pressure.

TU. In a device of the character described. a hollow rotatable drum. side frames. at casing supporting said frame. a series oi (10111 pression chambers in said hollow drum. means for feeding material to said chambers. a valve, located or contained within the opening within said drum having the drum and its chambers and cylinders rotating around it. a connection between said valve and each of said cylindt-n's. said valve being arranged to admit and exhaust fluid pressure to said cylinders as the drum. its cylinders and compression chambers rotate around the valve.

T1. In a device of the character described. a hollow rotatable drum. compression chambers therein. a 'alve located within the opening of the drum. a valve casing for said valve. and connections between said valve casing and each of said compression chan| bcrs. said drum and its compression chambers together with the valve casing and connect ions rotating around said valve.

T2. In a device of the character described. a hollow rotatable drum. compression chainbers therein. a valve located within the opening of the drum. a valve casing tor said valve. and connections between said valve casing and each of said compression chambers. said drutn and its compression chambcrs together with the valve casing and con nections rotating around said valve and said valve having ports tor admitting low and high fluid pressure and connecting the exhaust.

T3. In a device of the character described. a hollow rotatable drum. compression chambers therein. a valve located within the opening of the drum. a valve casing for said valve. and connections between said valve casing and each of said compression chainhers, said drum and its con'ipression chambers together Wltll the valve casing and connections rotating around said valve and said valve having an exhaust port and ports for admitting low and high fluid pressure, one of said ports being of larger capacity than the other whereby the high pressure is maintained for a longer period of time than the low pressure.

T4. In a device of the character described, a rotatable drum having a series of compression chambers, a supporting drum in which said drum rotates, fluid means for compressing material in said chambers, and fluid means for balancing the pressure on the bearings of said rotatable drum.

'75. In a device of the character described, a rotatable drum having a series of compres sion chambers. bearings for said drmn, a valve for controlling fluid pressure to said drum, and means for conducting the fluid pressure to one of said hearings to balance the pressure.

Th. In a device of the character described, a rotatable drum, a casing therefor, fluid controlled means for compressing material,

bearings for said drum. a groove or port in said bearings and means for conducting llnid pressure thereto to balance the pressure.

77. In a device of the character described, a rotatable drum, a casing therefor, lluid pressure means tor compressing material, bearings for said drum, and a valve for controlling the lluid pressure to said drum, and means for conducting the fluid pressure to said bearin s to balance the same.

78. In a evice of the character described, a rotatable drum, bearings therefor, a groove or passage around said bearings, means for admitting fluid pressure thereto to balance the pressure against the bearing, and packing around said groove or passage.

79. In a device of the character described, a rotatable drum, bearings therefor, a groove or passage around said bearings, means for admitting fluid pressure thereto to balance the pressure against the bearing, a packing around said groove or passage, said packing being tormed of strips and having perforated plates to hold the same in position.

St). In a device of the character described, a series of compression chambers, a valve. for admitting fluid pressure to said chambers, said valve having high pressure and low pressure ports, and means for balancing said valve on the side opposite the high pressure port.

81. I11 a device of the character described, a series of compression chambers, a valve for admitting fluid pressure to said chambers, said valve having high pressure and low pressure ports, said valve also having a groove or passage opposite the high pressure port connected with the high pressure supply whereby the pressure on the valve is balanced.

82. In a device of the character described, a series of compression chambers, a valve for controlling the admission of fluid thereto, said valve having a port on one side thereof, and a groove or passage on the opposite side of said valve to balance the pressure.

83. In a device of the character described, a alve for controlling the admission of fluid thereto. said valve having a port on one side thereof, and a groove or passage on the opposite side of said valve to balance the pres sure, said groove or passage having packing.

S t. In a device of the character described, a series of compression chambers, a valve casin and a mlve located within said casing, a high pressure port at one side thereof and a balancing port at the opposite side thereof.

85. In a device of the character described, a drum having an opening through it, a series of compression chambers in said drum, a series of chambers and cylinders also in said drum communicating with said chambers. a valve and alve casing independent of the drum but located within its o 'iening, said valve controlling fluid for compressing material in said chambers, and said valve having axial passages and radial passages connecting said axial passages, and conned tions located within the opening of said drum and connecting the axial ports with said cylinders.

86. In a device of the character described. a drum having an opening through it and containing a series of chambers and cylinders ctmnnunicating with said chambers, a valve and valve casing independent of the drum but located within this opening, connections also located within the opening in said drum and connecting said valve casing with the aforesaid cylinders, peripheral ports between said valve and valve casing, and axial ports connecting With said peripheral ports.

87. In a device of the character described, a series of compression chambers and cylinders, a valve casing having connections with said cylinders, a valve in said casing, low pressure, high pressure and exhaust periplr eral ports between said valve and valve cas ing, and axial high pressure, low pressure and exhaust ports connecting with said peripheral ports.

88. In a device of the character described, a supporting member having a series of compression chambers and cylinders, a valve easing having connections with said cylinders, a valve in said casing, low pressure, high pressure and exhaust peripheral ports between said valve and valve casing, and 

